ss948054
ss948054
08-08-2017
Mathematics
contestada
Solve by completing the square: x^2+15=8x
Respuesta :
sheheryar91
sheheryar91
20-08-2017
x^2+15=8x
x^2-8x=-15
x^2 - 2 (x)(4) =-15
adding 16 on both sides
x^2 - 2 (x)(4) +16=-15+16
x^2 - 2 (x)(4) + 4^2= 1
(x-4)^2=1
taking square root on bothsides x-4 = +-1
so x-4=1 or x-4=-1
x-5 or x=3
Answer Link
VER TODAS LAS RESPUESTAS ( 45+ )
Otras preguntas
What was the main reason Jews migrated to Palestine after World War II?
989,867 divided by 999 estimated
What did the Eighteenth Amendment to the US Constitution accomplish? It renewed the production, sale, and transportation of alcohol in the US. It gave women, Af
In a plant, 1,500 kg of nitrogen oxide is consumed per day to produce 1,500 kg of nitrogen dioxide per day. What is the percent yield? Use mc026-2.jpg.
What are the three main ways african religions communicate with the supernatural? describe each?
explain the author’s use of foreshadowing in Nadine Gordimer’s “Once Upon a Time
Simplify each radical expression. Leave in radical form. Show your work √7(√14+√3) 20 POINTS !!!!
Which of the following accurately describes a political similarity between the Qing and ming dynasties? A)Both dynasties allowed women to vote. B)Both dynastie
The ancient egyptians and greeks tinted their sculptures with _____ to give them a lifelike appearance
Which statement is correct? Salts are formed by the reaction of bases with water. Most salts are ionic and are soluble in water. Most salts are insoluble in wat
